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POST
/
api
/
generate
/
submit
curl --request POST \
  --url https://api.vidgo.ai/api/generate/submit \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "extend-music",
  "callback_url": "https://your-domain.com/callback",
  "input": {
    "default_param_flag": true,
    "audio_id": "audio_abc123",
    "prompt": "Continue with an energetic chorus section",
    "style": "Pop, Upbeat",
    "title": "Summer Vibes Extended",
    "continue_at": 120,
    "mv": "V5",
    "negative_tags": "Heavy Metal, Sad",
    "style_weight": 0.7
  }
}
'
{
  "code": 200,
  "data": {
    "task_id": "task-unified-1757165031-uyujaw3d",
    "status": "not_started",
    "created_time": "2025-11-12T10:30:00"
  }
}
  1. After submission, a task_id will be returned. If you provided a callback_url, when the task status becomes finished or failed, a POST request will be sent to the callback_url.
  2. Regardless of whether callback_url is provided, you can retrieve the response result through the unified Query Music Detail endpoint.

​
Usage Guide

  • This endpoint extends an existing audio track from a specified point
  • You can customize the extension with new style, prompt, and title, or inherit from the original track
  • Use default_param_flag to control whether to use custom parameters or original track settings

​
Parameter Details

  • In Custom Mode ( default_param_flag: true ):
    • prompt, style, title, and continue_at are required
    • continue_at specifies the timestamp (in seconds) where extension begins
    • Character limits vary by model:
      • V4: prompt 3000 characters, style 200 characters, title 80 characters
      • V4_5 & V4_5PLUS: prompt 5000 characters, style 1000 characters, title 100 characters
      • V4_5ALL: prompt 5000 characters, style 1000 characters, title 80 characters
      • V5: prompt 5000 characters, style 1000 characters, title 100 characters
  • In Simple Mode ( default_param_flag: false ):
    • Only audio_id and mv are required

​
Developer Notes

  • Ensure you have a valid audio_id from a previously generated track before using this endpoint
  • The extension will seamlessly continue from the specified continue_at timestamp

​
Optional parameters

  • negative_tags (string): Music styles or characteristics to exclude from the extension.
  • vocal_gender (string): Vocal gender preference. Use m for male, f for female. Note: This parameter increases the probability but cannot guarantee adherence.
  • style_weight (number): Strength of adherence to style. Range 0-1, up to 2 decimals.
  • weirdness_constraint (number): Controls creative deviation. Range 0-1, up to 2 decimals.
  • audio_weight (number): Balance weight for audio features. Range 0-1, up to 2 decimals.
  • persona_id (string): Persona ID to apply to the extended music. How to generate persona_id, visit generate-persona.

Authorizations

​
Authorization
string
header
required

All API endpoints require Bearer Token authentication

Get your API Key:

Visit the API Key Management Page to get your API Key

Add it to the request header:

Authorization: Bearer VIDGO_API_KEY

Body

application/json
​
model
enum<string>
required

API model identifier.

Must be extend-music for this endpoint.

Available options:
extend-music
Example:

"extend-music"

​
input
object
required

Input parameters for music extension

​
callback_url
string<uri>

Webhook callback URL for result notifications.

Endpoint that receives task completion updates.

Example:

"https://your-domain.com/callback"

Response

200 - application/json

Task submitted successfully

​
code
integer
required

HTTP status code

Example:

200

​
data
object
required